Rip-cord carton-making machine



April 11, 1939. J. A. STOCK RIP-CORD CARTON-MAKING MACHINE Filed March 7, 1938 6 Sheets-Sheet l Vivid LL Q \N 6 Sheets-Sheet 2 J. A. STOCK Filed March 7, 1958 RIP-CORD CARTON-MAKING 1 MACHINE April 11, 1939.

Jm'w aged;

QM MG M April 11, 1939. J. A. STOCK RIP-CORD CARTON-MAKING MACHINE 6 Sheets-Sheet 3 Filed March '7, 1958 III' April- 11, 1939. J A. STOCK 2,153,552

RIP-CORD CARTON-MAKING MACHINE Filed March '7, 1938 6 Sheets-Sheet 4 April 11, 1939.

J. A. STOCK RIP-CORD CARTON-MAKING MACHINE.

Filed March 7, 1938 6 SheetsSheet 5 4 lmuunnum J fJ I/ w April 11, 1939. .1. A. STOCK RIP-CORD CARTON-MAKING MACHINE Filed March 7, 1958 6 Sheets-Sheet 6 Julia goa Patented Apr. 11, 1939 UNlTED STATES PATENT OFFIQE 2,153,652 RIP-CORD CARTON-MAKING MACHINE Julius A. Stock, Chicago, 111., assignor to W. C.

Ritchie and Company, Chicago, III., a corporation of Illinois Application March 7, 1938, Serial No. 194,285 10 Claims. (Cl. 93-81) The current invention pertains to certain fea Figure 9 is a vertical cross section on line 99 tures of advantage and benefit in appliances or of Figure 1 illustrating the stock-rolling applimachines for making cartons, containers, recepance; tacles, etc., and it relates more particularly, but Figure 10 is a vertical cross section on line not necessarily restrictedly, to machines for pro- Iii-Ill of Figure 1 and presents the label or cover 5 viding convolutely wound carton bodies equipped sheet roller mechanism; with rip cords and cover sheets or labels. Figure 11 is a vertical cross section on line A leading object or prime purpose of the in- IIH of Figure l and shows the brake and its vention is to supply a machine which will make operating means;

19 such carton bodies rapidly, efficiently, and at rel- Figure 12 is a longitudinal section through a atively small cost and which machine will afford portion of the mandrel and its rotating means effective service over a long period of time and. and illustrates the clamp for the stock strips;

be unlikely to become damaged or injured in ordi- Figure 13 is a vertical cross section on line nary service. i3-l3 of Figure 12; i5 Although the novel and improved machine may Figure 14 shows the knife or shears for cutting 15 have many of its parts adjustable or replaceable off the stock strips from the supply; in order to enable it to make cartons or contain- Figure 15 is a vertical cross section on line ers of a variety of sizes and shapes, the underlyl5-l5 of Figure 1 presenting the locking means ing valuable features of the invention are not for the operating mechanism for the mandrel necessarily coupled with such capacities for adwhen the latter is stationary; 20 justments and replacements. Figure 16 illustrates the manner of winding the The new machine makes the convolutely wound label and cord around the wound stock strips; and carton body and supplies it with both the rip cord Figure 17 shows the finished carton element in and label or cover sheet and while the elements perspective.

of one or more of such carton bodies are being Referring to these drawings, it will be perceived 25 produced, the rip cords and labels'are at the same that the novel and improved machine includes time being supplied to one or more carton bodies a main frame 2| of appropriate shape for proppreviously made by and while still in the maerly supporting the various machine elements enchine. tering into the construction.

To enable those acquainted with this art to A short, properly journalled, drive shaft 22 is 30 understand the invention fully, both from strucpower driven by means of a pulley 23 and assotural and functional standpoints, a present preciated belt 24, the shaft having a small gear 25 ferred embodiment of the invention has been ilthereon in mesh with the teeth of a larger gear lustrated in the accompanying drawings to which 26 on an appropriately journaled shaft 21, the

reference should be had in connection with the hub of gear 26 carrying a gear sector 28 of 180 35 following detailed description, and for simplicity, coupled with a semicircular ring 29 at the side like reference numerals have been employed of the gear sector 21 and occupying the other throughout the several views of the drawings to 180.

represent 1 e ate the same parts. A long, suitably journaled shaft 30 (Figures 1 0 In these drawings: and 15) has two gears 3| and 32 secured together Figure 1 is a side view of the new machine; and free to turn on the shaft, gear sector 28 in- Fi u 2 s a p View of the machine; termittently cooperating or meshing the Figure 3 is an elevation on an enlarged scale of smaller gear 3| of the two gears to rotate the h label a 00rd p y P o o the mapair at spaced intervals of time, gear 32 being 5 chine; constantly in mesh with and adapted to revolve 5 Figure 4 is a vertical section on line 4-4 of a gear 33 fixed on the end portion of a main, Figure 3; upper shaft 34 revoluble in bearings 35, 35.

Figure 5 is a section through the cord-feeding An elongated mandrel or form 36 (Figures 1 mechanism; and 12) on which the winding of the stock is to Figure 6 is a cross section on line 6-45 of Figoccur has at one end a flange 31 demountably 50 ure 5; bolted or otherwise removably secured to a flange Figure '7 is a face view of the cord applying and 38 rotated by shaft 34. cutting means; From an understanding of the drive means de- Figure 8 is a vertical cross section on line 8-8 scribed, it will be obvious that the mandrel 36 5 5 of Figure 1 showing the stock-feeding device; is interruptedly rotated a plurality of revolutions (say three or four) at each actuation with intervening short periods of non-rotation.

In order that the associated or companion shaft 34 and mandrel 36 may be positively locked during their stationary periods, gear 3I has fixed thereto a hub 39 having two arms 43, 43 adapted to ride on the edge of the constantly rotating, semicircular member 29, while the continuously revolving sector 28 is temporarily out of mesh with its correlated gear 3|, to lock gear 3| from turning.

Hub 39 has another depending arm I4Il equipped with a roller I4l adapted to cooperate with the two cams I42, I42 and associated lugs I43, I43 adjacent to the ends of the gear sector 28 to shift the arms 40, 40 into and out of locking position, but of course it will be understood that any other appropriate locking means could be satisfactorily used as a substitute.

Shaft 30 is ceaselessly rotated by a gear 4I (Figure 1) on shaft 21 in mesh with another gear 42 fixed on shaft 33, and, in order to stop the rotation of shaft 34 quickly, it has a brake drum 43 (Figures 2 and 11) beneath which is a brake shoe 44 adapted to be raised againstthe drum by a rock arm 45 actuated by a cam 45 on shaft 30, the brake shoe being hinged at 4? and the arm 45 having a roller 48 riding on the cam.

Mandrel 36 (Figures 12 and 13) is fitted for a portion of its length with an elongated, stock strip clamp 5| rockingly mounted in the mandrel, and, when in looking position, it is substantially flush with the surface of the mandrel, the shaft 52 on which such clasp is mounted having on its exposed end a short arm 53 with a roller 54, the following cooperating instrumentalities being employed to open and close such clasp or clamp 5|.

A coiled spring IFI (Figures 1, 2i and 12) bears at one end against the brake member 43 and presses at its other end against a sleeve 62 slidable lengthwise on shaft 34 and having an oblique slot 63 therethrough, accommodating a pin 64 extended through a slot 65 in, and at a right angle to the ends of, the shaft 34 and into a short shaft 66 oscillatory in a cylindrical cavity 61 in the end of shaft 34 and having a slot 68 in its end accommodating the roller 54.

Thus, when sleeve 62, which is keyed at 39 (Figure 1) to shaft 34, is slid to the left as viewed in Figure 1 against the pressing action of spring BI its oblique slot will turn pin 64 partway around the axis of the shaft in slot 65 causing the shaft 66 and its slot 68 to turn correspondingly with equal and like swinging of the clasp or clamp 5|,

the latter being open when the mandrel is not rotating to receive the front edge of the strips of stock to be wound convolutely around the mandrel, the clamp automatically closing as soon as shaft 34 begins to turn again.

Sleeve 62 has spaced circular ribs I0, 10 (Figure 12) which have between them an operating yoke II on a slide I2 fitted with a roller 13 (Figure 1) in the groove of a cam I4 mounted on, and revolving With, shaft 33, whereby this cam controls the opening and closing of the clasp or clamp in the mandrel.

By means of a sprocket wheel BI on shaft 33 (Figure 1), a sprocket chain 82, and a second sprocket wheel 83 on a lower shaft 84, mounted to turn in bearings 85, 85, 85, such shaft is revolved uninterruptedly, the shaft near one end carrying a cam 86 (Figures 1 and 2) which, by means of a roller 8'! in its groove, rocks bellcrank lever 8 fulcrumed at 89, such lever through a yielding connection 9|, rocking arm 92 on the lower end of a suitably journalled, upright shaft 93, which at its top end has an arm 94 carrying a rotary, tapered or conical bearing 35 fitting in a complementary recess in the otherwise free end of the mandrel 36. When the finished carton bodies are delivered or discharged one by one from such end of the mandrel, the bearing referred to moves automatically away temporarily to permit such action.

To feed the partially completed and the finished carton bodies along the mandrel, the latter is supplied with a pusher IIlI (Figures 1 and 2) mounted on a slide I 02 connected by a link I03 to an arm H34 fulcrumed or hinged on the frame at I05 and having a roller I05 occupying the groove of cam IE? on shaft 30.

The supply strip of paper or other stock II, coated with an adhesive on its top surface, (Figure 2) is fed by and also over a slide I I2 (Figure 8) having a feeding pawl I20 engaging the top surface of the stock, the slide being actuated by a rock arm H3 rockingly mounted on a shaft H4 accommodated in hearings on the frame, said arm being swung forwardly and rearwardly by a link H5 connecting arm H3 to another rock arm H3 hinged on the frame at II! and having at its upper end a roller H3 in the groove of a cam IIQ on shaft 33.

The slide IE2 in moving toward the mandrel feeds the stock to the clamp iii on the mandrel 33 by means of its usual and well-known feeding pawl E26, and, after the advance end of the stock has been clamped to the mandrel, the sub sequent rotation of the mandrel draws the stock forwardly over the slide during the rearward travel of the slide and pawl.

Such supply strip in thus passing over the slide is cut into two parallel parts side by side by a cutting disc 25 (Figures 2 and 8) mounted on the slide M2 for rotation in any approved manner, and, after the proper lengths of the two strips have been fed to the mandrel, they are cut off by shears (Figures 2 and 14) comprising an upper stationary blade I22 and a companion, movable blade I 23 having a pin I25 in a slot I23 ed slide I21 actuated by a roller I28 (Figure 11) in the groove of a cam I23 on shaft 30, whereby at the proper moment the pair of stock strips feeding between the knife blades I22, I23 are out off from their supply, and the slide retracts for the next feeding operation.

Of course, it is to be understood that the stock strip feeding means is in register with that part of a suitably guidof the mandrel equipped with the clamp or clasp 5i referred to above.

At the side of the stock feeding mechanism described above, there is a roller I3I adapted to act on the convolutely wound, adhesively coated strips on the mandrel to cause them to become adequately cemented together.

Such roller I3I (Figures 2 and 9) is mounted to revolve freely in a support I32 on the upper end of a rock arm I33 hinged on the shaft H4 and fitted with a roller I35 acted upon by the edge of a cam 35 on shaft 33, the arm being pulled toward the cam by a coiled, contractile spring I31, and, as is shown, arm I33 extends up through a slot 838 in the table portion of the frame and the mounting of the roller is such that it can follow the cross sectional contour of the mandrel 33 regardless of the shape of the latter.

Turning now to the means provided for applying the labels or cover sheets to the convopart of the bar, and such lutely wound body parts of the cartons, it will be observed, as shown in Figure 10, that a pile I4I of such labels I42 is located on a small table I43 at a lower level than the underside of the mandrel 36, and adjustably mounted on the upper end of an upright bar I44 slidable through a vertical opening in a bracket or casting I45 mounted on the machine frame, such casting having an arm I46 hinged thereon at I41 and carrying at its end a spring-pressed latch or catch I48 adapted through the open side wall of the casting to enter any one of a series of recesses or notches 49 in the adjacent edge of the bar.

A spring I58 is fastened at its upper end to the frame and at its other end to a pin on the lower spring tends at all the latter and its pile of labels, but it is restrained from so doing, except at the proper moments, by a cross pin II extended through the arm I46 and engaging the under side of another arm I52 hinged at I53 to a rock arm I54 oscillatory on a stub shaft I55, element I52 at its free end having a roller I56 riding on the edge of a cam I51 fixed on and rotatable with shaft 30, the cam having a notch or recess, which, when it registers with the roller I56, permits the latter to ascend under the contractile action of spring I50 and allows the label table I43 and the labels I42 to be raised so that the topmost label will engage the adhesively coated, companion carton elements on the mandrel 3B and become adhered thereto preliminary to being completely wrapped around such elements during the rotation of the mandrel by a .roller times to raise "2 I I, described hereinafter.

The rip cord applying mechanism comprises the following coacting parts: Shaft 84 rotates a smaller, intermediate shaft IBI (Figures 1 and 3) by means of a sprocket wheel and chain connection, characterized as a whole I62, and such shaft I6I in turn revolves a shorter, higher shaft I63 (Figures 3 and 4) through sprocket wheels I84 and I65 and sprocket chain I86, a tightening idler wheel I61 also being employed in association with the chain.

Shaft I63 is mounted to rotate in arms of a bracket I68 adjustable along a supporting arm I69 carried by the frame of the machine.

Shaft I63 has two cams HI and I12 mounted thereon to turn therewith and these cams act respectively on rock arms I13 and I14 hinged on a top shaft or rod I15 and pulled outwardly by coiled, contractile springs I16 and I11 connected to a wire frame I18.

Arm I14 by means of a link I19 is operatively joined to a slide I8I (see Figures 4, 5 and 6) mounted to reciprocate in the lower portion of a bracket I82 on member I68, the slide at its top having two, small, aligned tubes I83, I84 adapted and designed to have the cord I85 from a supply spool I86 extend therethrough, a spring-pressed, inclined, hinged finger or catch I81 engaging the cord between the spaced ends of the guide tubes and acting to permit forward feed of the cord therebeneath the catch, but precluding rearward travel of the cord, all as will be readily understood.

Tube I84 is desirably hinged at I88 for vertical rocking capacity and it is normally held down on the bracket by a leaf spring I89.

The other rock arm I13 is connected by a link I9I to an arm I92 on a short shaft I93 journalled in the spaced sidewalls of bracket or member I82, such shaft between the sidewalls having an arm I94 slotted at its free end to accommodate a pin I95 in the separated extensions I96, I96 of an inclined slide I91 guided in the bracket, the slide having a pair of scissors or shears I98 mounted thereon at I99, the cutting edges of the scissors or shears being slightly above the path of travel of the cord I85.

The parts of the shears or scissors corresponding to the handles are pressed apart by an intervening expansive spring 20I and they are also supplied with rollers 282, 202 riding on the cam edges of a pair of plates 203, 293 adjacent to and overlying the marginal portions of the slide.

Obviously, when the slide descends, the scissors cut the cord, and when the slide ascends the scissors open again.

In addition to the foregoing coacting parts of the mechanism, the machine includes a roller for rolling down the applied labels on the box bodies and the intervening cord which has a trailing end designed to extend freely outside of the applied label.

Such roller 2 (Figures 2 and is mounted in the bifurcated end of a rock arm or lever 2I2 fulcrumed at 2I3 on the upper end of an arm 2I4 keyed to shaft H4 which is oscillated by means of an arm 2I5 keyed thereon (Figure 1) having a roller 2I6 in the side cam groove of a cam 2I1 on shaft 30, and, by this means, roller 2 is moved substantially horizontally toward and from the mandrel 36.

Such roller 2| I, however, requires a yielding up-and-down action and this is brought about by the fact thatthe lever 2I2 rests on an elongated roller 2I8 on the top end of a suitably guided vertical slide 2 I 9 reciprocated by an arm 22I on a shaft 222 having another arm 223 carrying a roller 224 coacting with cam 225 on shaft 38.

A spring 226 connects the end of arm 2I2 with a side extension 221 on arm 2I4, thus tending to raise the roller 2| I up to the mandrel, this action, however, being controlled by roller 2I8 and its operating cam 225.

The operation of the machine occurs practically as follows:

While the mandrel is stationary and its clamp 51 is open, the slide 2I2 advances the slit stock causing the front ends of the two paper or other thin strips to become clamped to the mandrel as the latter soon thereafter starts its period of rotation.

The turning of the mandrel winds these two adhesive-coated strips therearound convolutely the required number of times to secure the needed thickness of layers which thereby become more or less cemented together, and, of course, at the proper moment, the shears I22, I23 sever the parallel strips from the supply strip.

All this occurs while the slide or feeder IOI is to the right of the winding strips as the parts are viewed in Figure 2. a

The winding having been accomplished, the clamp 5| having opened, and the mandrel having stopped temporarily, the feeder I8I advances the wound strips along the mandrel to a position in register with the pressing roller I3I and it also feeds the other previously wound strips along the mandrel and delivers one completed article from the end of the mandrel.

During the next period of rotation, while another pair of strips are being wound on the mandrel, the roller I3I yieldingly rolls the pair of strips under consideration so that they are securely cemented together, the roller following the cross sectional contour of the mandrel even though it is rectangular rather than circular.

The next forward feed along the mandrel, during. its period of non-rotation, brings these particular convolutely wound pair of strips into register with the cord and label applying means, and, While the mandrel is stationary, the cord I85 having been advanced by its sliding feeder to a position above the topmost label with the end of the cord in substantial register with the remote edge of the label, and with the cord in register with the division between the two wound strips, the label table rises carrying the overlying cord with it and applies the advance portion of the upper label and the cord to the undersides of the wound strips and then recedes.

The mandrel then performs its next set of revolutions and the cord and label are wound around the companion body strips with the cord at the division between such strips.

As the cord is thus being wound around such carton body, it pulls the cord from the supply spool through the cord feeder While the latter is retracting preliminary to its next cord-feeding operation.

At the proper moment, the scissors I98 cut off the cord from the supply so as to leave a portion of the cord trailing behind the corresponding edge of the label, thus in the finished carton element 23d there is an exposed, accessible end 23I (Figure 17) to enable the rip cord to be easily grasped and pulled to sever the covering label in register with the division between the two parts of the labeled body, thus separating these two parts.

This cord-tearing operation, of course, is not carried out until the labeled elements have been supplied with an internal collar or neck, two ends, and the contents of the receptacle, none of which are shown, nor directly involved with this invention.

While the label and cord are being wound around the associated body elements, and thereafter, or merely thereafter, the spring-pressed roller 2!! advances to the labeled body and rolls it securely in place with, of. course, the major portion of the cord between the label and body, and,

' as in the previous instance, such roller yields to conform to the shape of the elements on which it rolls.

Subsequently, the labeled body is delivered from the machine from the then free end of the man drel by the advance of the following uncompleted products.

Those acquainted with this art will understand that the invention, as defined by the appended claims, which should be interpreted as broadly as permissible by the state of the prior art, is not limited and restricted to the precise and exact details of structure and modes of operation stated and that modifications can be resorted to'without departure from the heart and essence of the invention and without the loss or sacrifice of any of its material benefits and advantages.

I claim:

1. The combination of a table adapted to support a pile of cover sheets, means to feed the advance section of a rip-cord supply over the topmost cover sheet on said table with the end of the cord in substantial register with one edge of said topmost cover sheet, means to raise said table, cover sheets and rip-cord section to the carton element around which such cover sheet and rip cord are to be wound, means to so wind such cover sheet and rip cord around the carton element during rotation of the latter, and means to sever such rip-cord section from said supply with an end trailing beyond the opposite edge of said cover sheet, whereby when the cover sheet and cord have been wrapped around the carton element such trailing portion of the cord will be exposed outside of the cover sheet and be readily accessible for ripping said cover sheet asunder.

2. In a carton element making machine, the combination of a rotatably mounted mandrel, means to rotate said mandrel intermittently about its axis, means to feed successively to said mandrel pairs of stock strips with the adjacent edges of each pair practically in contact with one another, means to clamp the advance ends of said pairs of strips successively temporarily to said mandrel, whereby during rotation of the mandrel said pairs of strips are wound successively convolutely therearound side-byside, means to feed rip-cord sections successively and by rotation of said mandrel to wind one such rip-cord section around each said pair of wound strips on the mandrel in substantial registration with the joint between said wound strips, means to feed cover sheets successively and by rotation of said mandrel towind one such cover sheet around each said pair of wound strips and their rip-cord section leaving an exposed accessible end of the latter, and means to discharge the carton elements thus formed from the machine.

3. In a carton element making machine the combination of a rotatably mounted mandrel, 13:

means to rotate said mandrel intermittently about its axis, means to feed a supply strip to said mandrel, means to sever said supply strip longitudinally into two stock strips side-by-side, means to clamp the advance ends of said porarily to said mandrel, means to sever said stock strips from said supply strip, whereby during each period of rotation of said mandrel a pair of said stock strips are Wound convolutely side by side around the mandrel with their adjacent edges practically in contact with one another, means to feed rip-cord sections successively and by each period of rotation of said mandrel to vw'nd one such rip-cord section around each pair of previously wound strips on the mandrel in substantial register with the joint between them, means to feed cover sheets successively and by each period of rotation of said mandrel to wind one such cover sheet around each pair of previously Wound strips on the mandrel and their rip-cord section leaving an exposed accessible end of the latter, and means to discharge the carton elements thus formed from the machine.

4. In a carton element making machine, the

combination of a rotatabiy mounted mandrel, .t

means to rotate said mandrel intermittently about its axis, means to feed successively to said mandrel pairs of stock strips with the adjacent edges of each pair practically in contact with one another, means to clamp the advance ends of said pairs of strips temporarily to said mandrel, whereby during rotation of the mandrel said pairs of strips are. wound successively convolutely therearound side-by-side, means to slide said pairs of strips along said mandrel when their winding thereon has been completed thereby sliding the previously wound strips therealong in advance thereof, means to feed rip-cord sections successively and by a later period of rotation of the mandrel to wind one such rip-cord section around and in register with the joint between each pair of said advanced wound strips while another pair of stock strips is being wound around the mandrel at the original winding position, means to feed cover sheets successively and by a period of stock strips temi.

rotation of the mandrel to wind one such cover sheet around each pair of said advanced wound strips and their rip-cord section while a pair of stock strips are being wound around the mandrel at the original position, and means to deliver the finished carton elements from the machine.

5. The carton element making machine presented in claim 4 in which said cover sheets are wound around said advanced wound stock strips at the same later period of rotation of said mandrel that said rip-cord section is wound around the same pair of wound strips.

6. The carton element making machine presented in claim 4 in which said cover sheet and rip-cord section for each pair of wound strips are wound around said wound strips substantially simultaneously during the same later period of rotation of the mandrel.

7. The carton element making machine presented in claim 2 in combination with a rip-cord supply and means to sever therefrom a section for winding around each pair of wound stock strips.

8. The carton element making machine presented in claim 3 in combination with a rip-cord supply and means to sever therefrom a section for winding around each pair of wound stock strips.

9. The carton element making machine presented in claim 4 in combination with a rip-cord supply and means to sever therefrom a section for winding around each pair of wound stock strips.

10. In a carton element making machine, the combination of a rotatably mounted mandrel,

means to rotate said mandrel intermittently about its axis, means to feed successively to said mandrel pairs of stock strips with the adjacent edges of each pair practically in contact with one another, means to clamp the advance ends of said pairs of strips temporarily to said mandrel, whereby during the periods of rotation of the mandrel said pairs of strips are wound successively convolutely therearound side-by-side, a table adapted to support a pile of cover sheets, means to feed successively the current advance section of a. rip-cord supply over the current topmost cover sheet on said table with the end of the cord in substantial registration with one edge of the topmost cover sheet, means to raise and lower said table, cover sheets and rip-cord section intermittently to apply a portion of the current topmost cover sheet and of its corresponding rip-cord section to each pair of said successive wound stock strips with the rip-cord section in substantial registration with the joint between the wound strips, for winding of such cover sheet and rip-cord section around their pair of wound stock strips during a period of rotation of the mandrel, means to sever the current rip-cord section from said supply with an end trailing beyond the opposite edge of said topmost cover sheet, whereby when the cover sheet and cord have been wound around the wound stock strips such trailing portion of the cord will be exposed outside of the cover sheet and be readily accessible for ripping said cover sheet asunder, and means to discharge the finished carton elements thus formed from the machine.

JULIUS A. STOCK. 

